Signed-off-by: Samuel Li <[email protected]>
---
include/uapi/drm/amdgpu_drm.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 5b007fa..a2ae752 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -75,6 +75,25 @@ extern "C" {
#define DRM_IOCTL_AMDGPU_SCHED DRM_IOW(DRM_COMMAND_BASE +
DRM_AMDGPU_SCHED, union drm_amdgpu_sched)
#define DRM_IOCTL_AMDGPU_FREESYNC DRM_IOWR(DRM_COMMAND_BASE +
DRM_AMDGPU_FREESYNC, struct drm_amdgpu_freesync)
+/**
+ * memory domains
+ *
+ * %AMDGPU_GEM_DOMAIN_CPU System memory
+ *
+ * %AMDGPU_GEM_DOMAIN_GTT Gart memory linearizes non-contiguous pages of
+ * system memory, allows GPU access system memory in a linezrized fashion
+ *
+ * %AMDGPU_GEM_DOMAIN_VRAM Local video memory. For APUs, it is memory
+ * carved out by BIOS
+ *
+ * %AMDGPU_GEM_DOMAIN_GDS Global on-chip data storage used to share data
+ *
+ * %AMDGPU_GEM_DOMAIN_GWS Global wave sync, used to synchronize the
+ * execution of all the waves on a device
+ *
+ * %AMDGPU_GEM_DOMAIN_OA Ordered append, used by 3D or Compute engines
+ * for appending data
+ */
#define AMDGPU_GEM_DOMAIN_CPU 0x1
#define AMDGPU_GEM_DOMAIN_GTT 0x2
#define AMDGPU_GEM_DOMAIN_VRAM 0x4
--
2.7.4
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